Highest salary at Lavaca County in year 2020 was $89,308. Number of employees at Lavaca County in year 2020 was 254. Average annual salary was $25,873 and median salary was $31,524. Lavaca County average salary is 45 percent lower than USA average and median salary is 28 percent lower than USA median salary. From 2019 to 2020, the average salary of employees at this employer increased 16.0 percent, the median salary increased 18.7 percent.